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Old 07-24-2024, 11:29 AM   #1
straight6chevyguy
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Does anyone know the brake line sizes for a 76 C10?

Hello all, I'm looking for the size of the my rear brake line the one that runs along the passenger side fuel tank.
Mine line isn't leaking but there's a really rusty spot that's pretty deeply pitted, bad enough that I don't really feel safe running it.
I could just buy a premade line but was thinking maybe just make my own but have no clue what size line or fittings to buy.
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1978 chevy c20 350 4speed
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Old 07-25-2024, 10:41 PM   #2
cwcarpenter98
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Re: Does anyone know the brake line sizes for a 76 C10?

I'm currently working on replacing all the lines on my 81 while I have easy access. Not sure if it's the same as your 76, but on my 81 the rear line from the proportioning valve to the rear axle hose is 1/4" line. So is the line from the master to the prop valve. The front lines are all 3/16". I'm not sure what the lines are on the rear axle itself as I haven't pulled those off yet
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1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer - Half-Wit

1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed

1995 Dodge Dakota Sport

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Old 07-25-2024, 10:46 PM   #3
57taskforce
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Re: Does anyone know the brake line sizes for a 76 C10?

Fronts should be 3/16, front to rear should be 1/4 all the way and thru the rear soft line, back to 3/16 from the rear soft line distribution block to each wheel cylinder across the rear axle…
I would suggest getting NiCop brake line for the splice. It doesn’t rust and it’s really easy to work with.
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Old 08-03-2024, 12:32 PM   #4
straight6chevyguy
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Re: Does anyone know the brake line sizes for a 76 C10?

Sorry for the late reply but I ordered the 1/4 nicop line worked out great got it installed last week thanks again guys.
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1965 chevy c20 292 4speed http://67-72chevytrucks.com/vboard/s...d.php?t=777601
1976 chevy c10 250 4speed http://www.67-72chevytrucks.com/vboa...d.php?t=787037
1978 chevy c20 350 4speed
1998 chevy c1500 4.3L 5speed
2002 Chevy s10 4.3L auto 4x4
Plus a Mercury & some Fords... To many projects!
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